With the exception of isWorldTour, isPlutoPak and isShareware when playing Duke these are always constant and this way can be used to completely eliminate unneeded code.
* I tried to make this work in 2020 but its been nothing but headache. It's something for the game to control via a flag, not the backend to determine.
* For SW, this restores its original implementation.
.def is not the right place for this - it needs to run very early in the process, before scripted actors are loaded, so doing this stuff there means that half the initialization has to be postponed and error reporting is sub-par.
These are now part of RMAPINFO which gets parsed as one of the very last things - it is also where GZDoom is doing some of these things.
The better error reporting also allowed fixing some errors in these definitions.
Since there is no plan to keep them in case MP gets implemented there's no need to maintain them.
These should later be replaced by a generic screen using a better font and a layout that takes higher resolutions into account.
This is by no means a permanent solution but having it buys some time to find something more universal that won't affect performance too badly and investigate the need for a more robust solution.
The idea here is to define pairs of walls where when the first element of the pair is seen, it will treat the second one as view blocking.
This is used as the two offending windows (sectors 151 and 152) to cope with the lack of a height sensitive clipper.
While in GZDoom this uses the IWAD name, the same approach is a lot more problematic here because of name duplications with far more incompatible content.
So this allows targeting a group of base games instead of one specific version.
To allow cumulative loading without interfering with other ports, Raze will now look for files called xxxx-raze.def, where xxxx is the default .def name (e.g. duke3d-raze.def for Duke3D.) and if that is found, cumulatively load all same-named files - it will fall back on the default name if no such thing is found.
-def still overrides both and will not cumulatively load.
* moving polymost_voxdraw into polymost.cpp.
* consolidated all remaining voxel code in hw_voxels.cpp. All original Build voxel code is completely gone now, except for polymost_voxdraw, so this got moved out of the build/ folder.
* integrate Blood's voxel init code into the main function.
* some further cleanup was allowed as a result of this, so engineInit is gone now because these parts can now be done outside the games' app_init functions.
